This document provides instructions for setting up a Raspberry Pi by connecting various accessories like a monitor, keyboard, mouse, WiFi adapter, and SD card. It discusses installing operating systems like Raspbian and configuring the SD card. It also covers initial boot up, logging in with default credentials, connecting to WiFi, and performing a system update. The document then introduces GPIO (general purpose input output) pins on the Raspberry Pi and includes a Python code example to blink an LED connected to GPIO pin 4. It also shows how to wire a button to read input from GPIO pin 23 and control an LED.

1. Shahed Mehbub
President, Robo Mechatronics Association Bangladesh(RMABD)
Day 2

2. Setting up the Pi
6. USB TO POWER
SOURCE
5. TO MONITOR
4. TO MOUSE
3. TO
KEYBOARD
2. WI-FI
ADAPTER
1. SD CARD

3. Operating Systems for Pi
• Raspbian (Jessie, Jessie lite)
• Ubuntu (Snappy Ubuntu Core)
• Fedora
• Debian
• Archlinux ARM
• Windows 10 IoT Core
• Kali Linux
• OpenELEC
• RetroPIe

4. Preparing the SD card with an OS
• Step 1: Download bootable disk .iso's (raspbian jessie)
• Link:https://www.raspberrypi.org/downloads/raspbian
• Step 2: Write iso image to SD card
• For Windows/Mac/Linux
https://www.balena.io/etcher/

5. Let's boot it up!!!
• Plug in all the accessories
• Plug in the power cable
• Pi will start booting
automatically
(First boot may take a long
time)
• You may have to face a
configure window
(If it happens, follow it
through)

6. Default Credentials for a new user
• If you encounter for a
username and password:
• username: pi
• password: raspberry
• After login, type 'startx' to go to
the Desktop

7. Setup Completed!!!

8. Time for making it home!
▶▶ ▶▶

9. Wifi Configuration
Menu > Preferences > Wifi Configuration
OR
Click on the network icon on the top panel

10. Almoooooost Ready!!
Just one more step! :p

11. Do a system update
(It is important to function all the
apps working correctly)
• Open up the terminal:
• Write--> sudo apt-get update
• and--> sudo apt-get upgrade
** Reboot after completing the update process and we are
good to go!!! :D

12. GPIO Introduction

13. GPIO on Raspberry Pi
• 26 GPIO Header in Model A/B and 40 GPIO Header in Model B
• These pins are a physical interface between the Pi and the
outside world.
• Out of 26, 8 are dedicated IO Lines, 2 are for UART, 4 are for
SPI (+1 for Another Chip Select) , and another 2 for the I2C
Interface (Total 17 out of 26)
• Rest are Supply Rails.
• Model B+ has 9 additional GPIO including a extra SPI (Total 17
+ 9 = 26 out of 40)
• WiringPi : Easy to use C Library for accessing the GPIO Lines
via Programming (Arduino Style Programming)

14. Let's Do Blinky!!!
Making of a LED Blinker using Python
==> What you will need:
-> A raspberry pi
-> A LED
-> A 330Ω resistor to protect the LED
-> Jumper wires

15. Let's Do Blinky!!!
Step 1: Make sure if the LED is
okay
• Connect the jumper wires as
shown
• One wire on the short leg of
LED (Negative)
• Another one attached with the
resistor is
on the long leg (Positive)
LED

16. Let's Do Blinky!!!
Step 1: Make sure if the LED
is okay
• Connect the wires as shown
• One in the 3.3V pin (Positive
wire)
• Another one is in GND
** Check if the LED is on!
3.3V (Pin
1)
GND
Cathode
Anode
(longer leg)

17. Let's Do Blinky!!!
3.3V
Ground
GPIO (general purpose input
output)

18. Let's Do Blinky!!!
GPIO-4 (Pin 7)

19. 5 functions to control GPIO’s
• GPIO.setmode()
• GPIO.setwarnings()
• GPIO.setup()
• GPIO.input()
• GPIO.output()

20. Let's Do Blinky!!!
->Programming the LED
import RPi.GPIO as GPIO
import time
GPIO.setmode(GPIO.BCM)
LED = 4
GPIO.setup(LED,GPIO.OUT)
while True:
GPIO.output(LED,True)
time.sleep(1)
GPIO.output(LED,False)
time.sleep(1)
import RPi.GPIO libs
set LED pin as output
toggle light pin signal to
low/high to make it blink.
set pin type. use BCM, not pin
number
GPIO 4 pin (Pin 7)

21. Congrats!!!
You just finished your first Raspberry Pi project!

22. Button input - Wiring

23. Performing GPIO Input
#import RPi.GPIO as GPIO
import EmulatorGUI as GPIO
import time
GPIO.setmode(GPIO.BCM)
INPUTPIN= 23
GPIO.setup(INPUTPIN, GPIO.IN, pull_up_down=GPIO.PUD_UP)
while True:
if(GPIO.input(INPUTPIN) == True):
print(‘this’)
else:
print(‘that’)

24. Your Task!!
Write a program that pushing a button
will turn on an LED

25. Solution
import EmulatorGUI as GPIO
import time
GPIO.setmode(GPIO.BCM)
INPUTPIN= 23
led = 4
GPIO.setup(INPUTPIN, GPIO.IN, pull_up_down=GPIO.PUD_UP)
while True:
if(GPIO.input(INPUTPIN) == True):
led.on()
else:
led.off()
def led_on():
GPIO.output(led, True)
Def led_of():
GPIO.output(led, False)

26. Questions???